The storage speed of this computer is HDD, which is typical of many medium processor core PCs that are a similar age to it. A Hard Disk Drive (HDD) is the traditional storage method for computers. A HDD stores the information on magnetic disks. HDD drives are cheap, but they are slower than Flash and SSD bases storage systems.
We think you might also be interested in some of the other HDD PCs currently available including the DELL OptiPlex 9020 which is cheaper.
If the storage speed of this DELL desktop computer is too slow for you then you might want to consider the HP 800 G2 (SSD) which is also cheaper.